How do you upgrade cars when you unlock upgrades like custom tyre?
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They can't be changed.they can be changed in most wanted,underground 2,etc.
It automatically does it for you
Thats the way the game works as I play the game even I accomplish the bar or the meter I can't find the option to upgrade it maybe it is automatically upgrading, but for me I can't see the difference from the first car I use then when it is upgraded but in such a way just enjoy it
The car automatically upgrades itself. For example when you unlock nitrous you gt two goes to use nitrous
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